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FN7-12/24 DR 12kV 24kV Indoor Load Break Switch (LBS)

12kV 24kV Indoor Load Break Switch (LBS)

Additional information

Product Details:

FN7-12/24 12kV 24kV Indoor Load Break Switch (LBS)

 

General Introduction

FN7-12/24 DR model AC and HV indoor load break switch applies to three
-phase power supply system of rated voltage 12/24kV and AC 50/60Hz. It
used to switch on and off load-breaking current and short-circuit current. It is
made as per IEC62271-105.

 

Model&Meaning

fn7 12 model

 

Technical Specification

Technical Specification
Rated voltage

kV

12

24

Rated current

A

400

630

630

Rated power frequency

Hz

50/60

50/60

50/60

Short circuit making capacity

kA Peak.

31.5

50

50

Peak withstand current

kA Peak.

31.5

50

50

Short time current

kA eff.

1Sec.

25

25

25

3Sec.

12.5

20

20

Max. breaking capacity in co-operation with fuses IEC 62271-105 (IEC 420 1990-11)

A

1600

1600

900

Max. fuse current(XRNT Fuse)

A

200

200

200

Power frequency withstand voltage 50Hz 1 min,:
– To earth and between poles

kV

42

42

55

– Across isolating distance

kV

48

48

70

Impulse withstand voltage 1.2/50μ s:
– To earth and between poles

kV

75

75

125

– Across isolating distance

kV

85

85

145

Mechanism Endurance

cycles

2000

2000

2000

Outline&Drawing

 

ft

1. Arc Extinguishing Knife   2. Arc Contact Part and Arc Extinguishing Chamber   3. Insulator   4. Base

5. Dynamic Contact Knife   6. Static Contact Knife   7. Spring energy storage device (inside the main axis sleeve)   8. Main knife turning arm

Drawing 1 FN7-12 load switch outline and installation size

 

fn7 24 24kv load break switch

 

1.Main axis 2.Insulating rod 3.Blade 4.Contact 5.Arc contact
6.Arc extinguish chamber 7.Spring stored energy mechanism
8.On/Off operating arm

Drawing 2 FN7-24D load switch outline and installation size

FN7-24 INDOOR2

We also offer complete set of FN7 parts with or without earthing switch.

Earthing Switch Parts:

photo 2 fn7 earthing switch parts

FN7 load break switch parts:

photo 1 fn7 complete parts

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